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Contract deployment method and device

A contract and privacy technology, applied in the field of contract deployment, can solve problems such as performance loss

Active Publication Date: 2020-05-01
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In related technologies, to meet the privacy requirements in various scenarios, one way is to achieve privacy protection through encryption technol

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  • Contract deployment method and device
  • Contract deployment method and device
  • Contract deployment method and device

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Embodiment Construction

[0084] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. Implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of this specification. Rather, they are merely examples of apparatuses and methods consistent with aspects of one or more embodiments of the present specification as recited in the appended claims.

[0085] It should be noted that in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or less steps than those described in this specification. In addition, a single step described in this...

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Abstract

One or more embodiments of the invention provide a contract deployment method and device. The method comprises the following steps: a client acquires a remote certification report for an off-chain private calculation node, the remote certification report is generated after an authentication server verifies self-recommendation information generated by the off-chain private calculation node, and theself-recommendation information is related to an off-chain trusted execution environment created on the off-chain private calculation node; the client encrypts and transmits the byte code of the under-chain contract to the under-chain privacy calculation node under the condition that the under-chain privacy calculation node is determined to be credible according to the remote certification report, and the under-chain privacy calculation node decrypts the byte code in the under-chain credible execution environment to obtain the byte code and deploys the byte code; wherein under the condition that the blockchain node initiates a call to an under-chain contract through an oracle mechanism, the deployed byte code can be executed in an under-chain trusted execution environment, and an execution result can be fed back to the blockchain node through the oracle mechanism. According to the specification, privacy protection of a calculation process can be realized.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of verifiable computing, and in particular to a method and device for deploying a contract. Background technique [0002] In related technologies, to meet the privacy requirements in various scenarios, one way is to achieve privacy protection through encryption technologies such as homomorphic encryption (Homomorphic encryption) and zero-knowledge proof (Zero-knowledge proof), but it also brings Serious performance loss. Trusted Execution Environment (TEE) is another solution. TEE can function as a black box in the hardware, and the code and data operating system layer executed in the TEE cannot be peeked at, and only the predefined interface in the code can operate on it. In terms of efficiency, due to the black-box nature of TEE, plaintext data is used for operations in TEE, rather than complex cryptographic operations in homomorphic encryption, and there is no loss in the ...

Claims

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Application Information

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IPC IPC(8): G06F21/60G06F21/62
CPCG06F21/602G06F21/6245
Inventor 吴因佥邱鸿霖吴行行
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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